package ooday01;
//构造方法的演示
public class ConsDemo {
    public static void main(String[] args) {
        Student ww = new Student();
        Student ls =new Student("李四",24);
        Student zs =new Student("张三",25,"jsd2302","007");
        ww.sayHi();
        ls.sayHi();
        zs.sayHi();
    }
}
